2000 Mercedes Benz C230

DRITON

2000 MERCEDES BENZ C230

2000 Mercedes Benz C230 4 cyl Two Wheel Drive Automatic 122000 miles

Hi, I recently received a “check engine” light, and did a computer scan and came up with a P0170 code, and it says Fuel Trim Malfunction (Bank 1). What does it mean, and how do I correct the problem. The car does not shift right in the lower gears sometimes and has lost performance. Thank you guys.

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Monday, November 17th, 2008 AT 10:03 AM

5 Replies

RACEFAN966

EXPERT

5,143 POSTS

Ok this could be a few things it could be an intake vacuum leak or an injector problem or fuel pressure regulator. What you should do is get a spray bottle with water and check the intake for any leaks first. Spray around the intake and upper plenum and throttle body and if the engine idle changes or tries to die then there is were the leak is. Start with this and let me know what you find and we will go from there. Ok.

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Monday, November 17th, 2008 AT 11:38 AM

DRITON

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I think I found the problem, it looks like it is the mass air flow hose, and the throttle body hose, but I have no idea where to get them, I have been looking online and no luck. It is a Mercedes-Benz 2000 C230 Kompressor thanks again for the early response

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Monday, November 17th, 2008 AT 5:26 PM

JNOVACK

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733 POSTS

If those are ridged hoses then I believe those are dealer parts at this time they're not aftermarket as of yet

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Monday, November 17th, 2008 AT 7:22 PM

DRITON

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Hi,

I have a quick question, How do I install a new Mass Air Flow Sensor, and the hoses that connect from it to the throttle body. Like do I need to use some type of silicone or should I just tighten the hose clamps and thats it. Thank you

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Tuesday, November 18th, 2008 AT 10:20 AM

JNOVACK

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733 POSTS

This is what the map sensor looks like it should be located on the intake manifold

as for the hoses if there are clamps on each end of hose just remove and install same clamps when you put the hoses on if no clamps then you just push on and tats it